10 Flashcards
Which cardiac biomarkers are regulators of myocyte contraction?
cTnI and cTnT
What glands are indicated in primary endocrine dysfunction?
target glands (thymus, thyroid, parathyroid, etc.)
What glands are indicated in secondary endocrine dysfunction?
pituitary gland
What glands are indicated in tertiary endocrine dysfunction?
hypothalamus
Which hemoglobins are formed in alpha-thalassemia?
Bart’s Hgb, Hgb E, and Hgb H
What is the RBC size classification in G6PD deficiency or malaria?
normocytic
What is the RBC size classification in iron deficiency or thalassemia?
microcytic
What is the RBC size classification in chronic liver disease or vitamin B12 deficiency?
macrocytic
What percentage of untreated patients with latent tuberculosis infections (LTBI) will eventually develop an active infection?
5-10%
In a normal lymphocyte population, all CD 4+ cells are also + for what marker?
CD 3
Where is serum alkaline phosphatase produced?
bone, intestine, and placenta
What is the conidia arrangement of Phialophora sp.?
clusters
What is the conidia arrangement of Alternaria sp.?
chains
What is the conidia arrangement of Exophiala sp.?
clusters
What is the conidia arrangement of Cladosporium sp.?
chains
What is the identifying characteristic of Aureobasidium pullulans?
production of black, yeast-like colonies
pH electrodes that measure hydrogen ion concentrations are made of what?
glass
Which autoantibody binds to TSH receptor sites on thyroid cell membranes, preventing TSH binding?
thyroid-stimulating immunoglobulins
What is the turbidity level of the bacterial inoculum of a standard disc diffusion (Kirby-Bauer) susceptibility test?
0.5 McFarland Standard
What percentage of glycerol is generally used when freezing red cells of rare phenotypes?
40%
Which Plasmodium species presents with enlarged RBCs with fine brownish granules, ameboid structures, Schuffner’s dots, and >15 parasites in some cells?
Plasmodium vivax
What disease will most likely show a homogenous pattern in an immunofluorescent (IF) microscopy test for ANA?
SLE
Which potent platelet aggregation inhibitor is released by endothelial cells?
prostacyclin
What factor deficiency would cause prolongation of the PT assay without prolonging the aPTT?
Factor VII
What organism causes melioidosis?
Burkholderia pseudomallei
What organism causes glanders?
Burkholderia mallei
Exposing serum or plasma to a high magnetic field is necessary for which technology?
nuclear magnetic resonance (NMR) particle count
What is Westgard multi-rule R4S?
one data point is +2SD and a consecutive data point is -2SD
Why might some Brucella subcultures switch from smooth colonies to rough colonies?
diminished reactivity with Brucella-specific antibodies
